transparent color

1 files changed, 13 insertions, 2 deletions

diff --git a/teensy/teensy_renderer.c b/teensy/teensy_renderer.c
index b51d2a9..d3f73fd 100644
--- a/teensy/teensy_renderer.c
+++ b/teensy/teensy_renderer.c
@@ -8,6 +8,8 @@
 #include "teensy_context.h"
 #include "teensy_list.h"
 
+#define BLEND_COLOR ty_color(255, 0, 255)
+
 struct ty_renderer r;
 
 static
@@ -134,10 +136,16 @@ void ty_draw_image(struct ty_image img, struct ty_vec2i pos)
 
     for (int dy = y1; dy < y2; dy++) {
         for (int dx = x1; dx < x2; dx++) {
+            struct ty_color px = ty_img_get_pixel(
+                img,
+                ty_vec2i(dx - x1, dy - y1)
+            );
+            if (memcmp(&px, &BLEND_COLOR, sizeof(px)) == 0)
+                continue;
             ty_img_set_pixel(
                 r.screen,
                 ty_vec2i(dx, dy),
-                ty_img_get_pixel(img, ty_vec2i(dx - x1, dy - y1))
+                px
             );
         }
     }
@@ -157,11 +165,14 @@ void ty_draw_image_ex(
         for (int dx = x1; dx < x2; dx++) {
             int img_x = ((dx - x1) * src.w) / dst.w + src.x;
             int img_y = ((dy - y1) * src.h) / dst.h + src.y;
+            struct ty_color px = ty_img_get_pixel(img, ty_vec2i(img_x, img_y));
+            if (memcmp(&px, &BLEND_COLOR, sizeof(px)) == 0)
+                continue;
 
             ty_img_set_pixel(
                 r.screen,
                 ty_vec2i(dx, dy),
-                ty_img_get_pixel(img, ty_vec2i(img_x, img_y))
+                px
             );
         }
     }